Scarce 1851 C One Dollar Gold Coin PMD

About 3 weeks ago I purchased some coins off of ebay. The seller had a pair of homemade cuff links using a one dollar gold coin paired with a silver III cent coin. Four coins total. One of the gold dollars was an 1851C and wanting one but not waning to pay big dollars I thought I'd take a chance on these coins. One set had the 1851C and the other set had the 1851P.

This is what one set looked like when they arrived. Pictures are from the original ebay auction.





I have a friend who is very knowledgeable on metals and he suggested I use the red silver (nitric) acid to remove the silver post and silver solder from the gold coin. The silver acid will NOT harm the gold coin. At this point anything done is better than doing nothing at all. Using metal snips, I clipped the post a little closer to the coin. I applied the acid around the coins soldered shank and let it sit for 30 minutes. I rinsed the acid then repeated this process and noticed the red acid would turn blue and the center silver shank was shrinking. I repeated this process about 8 times. I put on a final application of acid and let it sit overnight. In the morning the remnants of the shank were completely gone. The only thing left was the damage created from the jeweler and his handy work. I paid 275 with free shipping. A little pricey but I've already turned down 325 for all this mess. One damaged 1851C on ebay did
330 and another one with a soldered loop at the coins top did 660. For now I think I'll keep them in the collection.